<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  
  <title>RPC系列一之入门 | Hexo</title>
  <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
  <meta name="description" content="简介　　现在web后台开发中rpc概念大行其道，同时也出现了很多优秀的框架。国外的有zeroC，国内最出名的则是神器dubbo，此外还有commonrpc、zbus等。不同的框架都有不同的优势和侧重点。但是归根结底，核心的原理都是类似的。首先rcp框架最基础组件包括两个：1. 服务提供方；2. 服务调用方。至于负载均衡和服务的注册与发现功能，只是在基础组件上的一个完善罢了。下面我们将通过一个简单的">
<meta property="og:type" content="article">
<meta property="og:title" content="RPC系列一之入门">
<meta property="og:url" content="http://yoursite.com/2015/12/01/rpc/1.RPC系列之入门/index.html">
<meta property="og:site_name" content="Hexo">
<meta property="og:description" content="简介　　现在web后台开发中rpc概念大行其道，同时也出现了很多优秀的框架。国外的有zeroC，国内最出名的则是神器dubbo，此外还有commonrpc、zbus等。不同的框架都有不同的优势和侧重点。但是归根结底，核心的原理都是类似的。首先rcp框架最基础组件包括两个：1. 服务提供方；2. 服务调用方。至于负载均衡和服务的注册与发现功能，只是在基础组件上的一个完善罢了。下面我们将通过一个简单的">
<meta property="og:updated_time" content="2016-01-29T17:47:36.000Z">
<meta name="twitter:card" content="summary">
<meta name="twitter:title" content="RPC系列一之入门">
<meta name="twitter:description" content="简介　　现在web后台开发中rpc概念大行其道，同时也出现了很多优秀的框架。国外的有zeroC，国内最出名的则是神器dubbo，此外还有commonrpc、zbus等。不同的框架都有不同的优势和侧重点。但是归根结底，核心的原理都是类似的。首先rcp框架最基础组件包括两个：1. 服务提供方；2. 服务调用方。至于负载均衡和服务的注册与发现功能，只是在基础组件上的一个完善罢了。下面我们将通过一个简单的">
  
    <link rel="alternative" href="/atom.xml" title="Hexo" type="application/atom+xml">
  
  
    <link rel="icon" href="/favicon.png">
  
  <link href="//fonts.googleapis.com/css?family=Source+Code+Pro" rel="stylesheet" type="text/css">
  <link rel="stylesheet" href="/css/style.css" type="text/css">
  

</head>
<body>
  <div id="container">
    <div id="wrap">
      <header id="header">
  <div id="banner"></div>
  <div id="header-outer" class="outer">
    <div id="header-title" class="inner">
      <h1 id="logo-wrap">
        <a href="/" id="logo">Hexo</a>
      </h1>
      
    </div>
    <div id="header-inner" class="inner">
      <nav id="main-nav">
        <a id="main-nav-toggle" class="nav-icon"></a>
        
          <a class="main-nav-link" href="/">Home</a>
        
          <a class="main-nav-link" href="/archives">Archives</a>
        
      </nav>
      <nav id="sub-nav">
        
          <a id="nav-rss-link" class="nav-icon" href="/atom.xml" title="RSS Feed"></a>
        
        <a id="nav-search-btn" class="nav-icon" title="Search"></a>
      </nav>
      <div id="search-form-wrap">
        <form action="//google.com/search" method="get" accept-charset="UTF-8" class="search-form"><input type="search" name="q" results="0" class="search-form-input" placeholder="Search"><button type="submit" class="search-form-submit">&#xF002;</button><input type="hidden" name="sitesearch" value="http://yoursite.com"></form>
      </div>
    </div>
  </div>
</header>
      <div class="outer">
        <section id="main"><article id="post-rpc/1.RPC系列之入门" class="article article-type-post" itemscope itemprop="blogPost">
  <div class="article-meta">
    <a href="/2015/12/01/rpc/1.RPC系列之入门/" class="article-date">
  <time datetime="2015-11-30T17:00:00.000Z" itemprop="datePublished">2015-12-01</time>
</a>
    
  <div class="article-category">
    <a class="article-category-link" href="/categories/rpc/">rpc</a>
  </div>

  </div>
  <div class="article-inner">
    
    
      <header class="article-header">
        
  
    <h1 class="article-title" itemprop="name">
      RPC系列一之入门
    </h1>
  

      </header>
    
    <div class="article-entry" itemprop="articleBody">
      
        <h2 id="u7B80_u4ECB"><a href="#u7B80_u4ECB" class="headerlink" title="简介"></a>简介</h2><p>　　现在web后台开发中rpc概念大行其道，同时也出现了很多优秀的框架。国外的有zeroC，国内最出名的则是神器dubbo，此外还有commonrpc、zbus等。不同的框架都有不同的优势和侧重点。但是归根结底，核心的原理都是类似的。首先rcp框架最基础组件包括两个：1. <strong>服务提供方</strong>；2. <strong>服务调用方</strong>。至于负载均衡和服务的注册与发现功能，只是在基础组件上的一个完善罢了。下面我们将通过一个简单的例子进行说明。在文章最后，会对该示例进行分析，为后面的rpc系列文章进行铺垫。</p>
<h2 id="u5B9A_u4E49_u670D_u52A1"><a href="#u5B9A_u4E49_u670D_u52A1" class="headerlink" title="定义服务"></a>定义服务</h2><p>　　下面我们将定义一个服务提供方，包括接口和实现。<br><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//接口</span></span><br><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">interface</span> <span class="title">HelloService</span> </span>&#123;</span><br><span class="line">    <span class="function">String <span class="title">hello</span><span class="params">(String name)</span></span>;</span><br><span class="line">&#125;</span><br><span class="line"><span class="comment">//实现</span></span><br><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">HelloServiceImpl</span> <span class="keyword">implements</span> <span class="title">HelloService</span> </span>&#123;</span><br><span class="line"></span><br><span class="line">    <span class="annotation">@Override</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> String <span class="title">hello</span><span class="params">(String name)</span> </span>&#123;</span><br><span class="line">        <span class="keyword">return</span> <span class="string">"Hello "</span> + name;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure></p>
<p>　　下面我们再定义一个服务的导出和引用<br><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">RpcFramework</span> </span>&#123;</span><br><span class="line">    <span class="comment">/**</span><br><span class="line">     * 暴露服务</span><br><span class="line">     *</span><br><span class="line">     * <span class="doctag">@param</span> service 服务实现</span><br><span class="line">     * <span class="doctag">@param</span> port 服务端口</span><br><span class="line">     * <span class="doctag">@throws</span> Exception</span><br><span class="line">     */</span></span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">static</span> <span class="keyword">void</span> <span class="title">export</span><span class="params">(<span class="keyword">final</span> Object service, <span class="keyword">int</span> port)</span> <span class="keyword">throws</span> Exception </span>&#123;</span><br><span class="line">        <span class="keyword">if</span> (service == <span class="keyword">null</span>)</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> IllegalArgumentException(<span class="string">"service instance == null"</span>);</span><br><span class="line">        <span class="keyword">if</span> (port &lt;= <span class="number">0</span> || port &gt; <span class="number">65535</span>)</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> IllegalArgumentException(<span class="string">"Invalid port "</span> + port);</span><br><span class="line">        System.out.println(<span class="string">"Export service "</span> + service.getClass().getName() + <span class="string">" on port "</span> + port);</span><br><span class="line">        ServerSocket server = <span class="keyword">new</span> ServerSocket(port);</span><br><span class="line">        <span class="keyword">for</span>(;;) &#123;</span><br><span class="line">            <span class="keyword">try</span> &#123;</span><br><span class="line">                <span class="keyword">final</span> Socket socket = server.accept();<span class="comment">//服务器端一旦收到消息，就创建一个线程进行处理</span></span><br><span class="line">                <span class="keyword">new</span> Thread(<span class="keyword">new</span> Runnable() &#123;</span><br><span class="line">                    <span class="annotation">@Override</span></span><br><span class="line">                    <span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">run</span><span class="params">()</span> </span>&#123;</span><br><span class="line">                        <span class="keyword">try</span> &#123;</span><br><span class="line">                            <span class="keyword">try</span> &#123;</span><br><span class="line">                                ObjectInputStream input = <span class="keyword">new</span> ObjectInputStream(socket.getInputStream());</span><br><span class="line">                                <span class="keyword">try</span> &#123;</span><br><span class="line">                                    String methodName = input.readUTF();<span class="comment">//service是服务器端提供服务的对象，但是，要通过获取到的调用方法的名称，参数类型，以及参数来选择对象的方法，并调用。获得方法的名称</span></span><br><span class="line">                                    Class&lt;?&gt;[] parameterTypes = (Class&lt;?&gt;[])input.readObject();<span class="comment">//获得参数的类型</span></span><br><span class="line">                                    Object[] arguments = (Object[])input.readObject();<span class="comment">//获得参数</span></span><br><span class="line">                                    ObjectOutputStream output = <span class="keyword">new</span> ObjectOutputStream(socket.getOutputStream());</span><br><span class="line">                                    <span class="keyword">try</span> &#123;</span><br><span class="line">                                        Method method = service.getClass().getMethod(methodName, parameterTypes);<span class="comment">//通过反射机制获得方法</span></span><br><span class="line">                                        Object result = method.invoke(service, arguments);<span class="comment">//通过反射机制获得类的方法，并调用这个方法</span></span><br><span class="line">                                        output.writeObject(result);<span class="comment">//将结果发送</span></span><br><span class="line">                                    &#125; <span class="keyword">catch</span> (Throwable t) &#123;</span><br><span class="line">                                        output.writeObject(t);</span><br><span class="line">                                    &#125; <span class="keyword">finally</span> &#123;</span><br><span class="line">                                        output.close();</span><br><span class="line">                                    &#125;</span><br><span class="line">                                &#125; <span class="keyword">finally</span> &#123;</span><br><span class="line">                                    input.close();</span><br><span class="line">                                &#125;</span><br><span class="line">                            &#125; <span class="keyword">finally</span> &#123;</span><br><span class="line">                                socket.close();</span><br><span class="line">                            &#125;</span><br><span class="line">                        &#125; <span class="keyword">catch</span> (Exception e) &#123;</span><br><span class="line">                            e.printStackTrace();</span><br><span class="line">                        &#125;</span><br><span class="line">                    &#125;</span><br><span class="line">                &#125;).start();</span><br><span class="line">            &#125; <span class="keyword">catch</span> (Exception e) &#123;</span><br><span class="line">                e.printStackTrace();</span><br><span class="line">            &#125;</span><br><span class="line">        &#125;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="comment">/**</span><br><span class="line">     * 引用服务</span><br><span class="line">     *</span><br><span class="line">     * <span class="doctag">@param</span> &lt;T&gt; 接口泛型</span><br><span class="line">     * <span class="doctag">@param</span> interfaceClass 接口类型</span><br><span class="line">     * <span class="doctag">@param</span> host 服务器主机名</span><br><span class="line">     * <span class="doctag">@param</span> port 服务器端口</span><br><span class="line">     * <span class="doctag">@return</span> 远程服务</span><br><span class="line">     * <span class="doctag">@throws</span> Exception</span><br><span class="line">     */</span><span class="comment">//原理是通过代理，获得服务器端接口的一个“代理”的对象。对这个对象的所有操作都会调用invoke函数，在invoke函数中，是将被调用的函数名，参数列表和参数发送到服务器，并接收服务器处理的结果</span></span><br><span class="line">    <span class="annotation">@SuppressWarnings</span>(<span class="string">"unchecked"</span>)</span><br><span class="line">    <span class="keyword">public</span> <span class="keyword">static</span> &lt;T&gt; <span class="function">T <span class="title">refer</span><span class="params">(<span class="keyword">final</span> Class&lt;T&gt; interfaceClass, <span class="keyword">final</span> String host, <span class="keyword">final</span> <span class="keyword">int</span> port)</span> <span class="keyword">throws</span> Exception </span>&#123;</span><br><span class="line">        <span class="keyword">if</span> (interfaceClass == <span class="keyword">null</span>)</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> IllegalArgumentException(<span class="string">"Interface class == null"</span>);</span><br><span class="line">        <span class="keyword">if</span> (! interfaceClass.isInterface())</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> IllegalArgumentException(<span class="string">"The "</span> + interfaceClass.getName() + <span class="string">" must be interface class!"</span>);</span><br><span class="line">        <span class="keyword">if</span> (host == <span class="keyword">null</span> || host.length() == <span class="number">0</span>)</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> IllegalArgumentException(<span class="string">"Host == null!"</span>);</span><br><span class="line">        <span class="keyword">if</span> (port &lt;= <span class="number">0</span> || port &gt; <span class="number">65535</span>)</span><br><span class="line">            <span class="keyword">throw</span> <span class="keyword">new</span> IllegalArgumentException(<span class="string">"Invalid port "</span> + port);</span><br><span class="line">        System.out.println(<span class="string">"Get remote service "</span> + interfaceClass.getName() + <span class="string">" from server "</span> + host + <span class="string">":"</span> + port);</span><br><span class="line">        <span class="keyword">return</span> (T) Proxy.newProxyInstance(interfaceClass.getClassLoader(), <span class="keyword">new</span> Class&lt;?&gt;[]&#123;interfaceClass&#125;, <span class="keyword">new</span> InvocationHandler() &#123;</span><br><span class="line">            <span class="function"><span class="keyword">public</span> Object <span class="title">invoke</span><span class="params">(Object proxy, Method method, Object[] arguments)</span> <span class="keyword">throws</span> Throwable </span>&#123;</span><br><span class="line">                Socket socket = <span class="keyword">new</span> Socket(host, port);</span><br><span class="line">                <span class="keyword">try</span> &#123;</span><br><span class="line">                    <span class="comment">//proxy.getClass().get</span></span><br><span class="line">                    ObjectOutputStream output = <span class="keyword">new</span> ObjectOutputStream(socket.getOutputStream());</span><br><span class="line">                    <span class="keyword">try</span> &#123;</span><br><span class="line">                        output.writeUTF(method.getName());</span><br><span class="line">                        output.writeObject(method.getParameterTypes());</span><br><span class="line">                        output.writeObject(arguments);</span><br><span class="line">                        ObjectInputStream input = <span class="keyword">new</span> ObjectInputStream(socket.getInputStream());</span><br><span class="line">                        <span class="keyword">try</span> &#123;</span><br><span class="line">                            Object result = input.readObject();</span><br><span class="line">                            <span class="keyword">if</span> (result <span class="keyword">instanceof</span> Throwable) &#123;</span><br><span class="line">                                <span class="keyword">throw</span> (Throwable) result;</span><br><span class="line">                            &#125;</span><br><span class="line">                            <span class="keyword">return</span> result;</span><br><span class="line">                        &#125; <span class="keyword">finally</span> &#123;</span><br><span class="line">                            input.close();</span><br><span class="line">                        &#125;</span><br><span class="line">                    &#125; <span class="keyword">finally</span> &#123;</span><br><span class="line">                        output.close();</span><br><span class="line">                    &#125;</span><br><span class="line">                &#125; <span class="keyword">finally</span> &#123;</span><br><span class="line">                    socket.close();</span><br><span class="line">                &#125;</span><br><span class="line">            &#125;</span><br><span class="line">        &#125;);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure></p>
<p>　　在export方法中，我们启动了一个ServerSocket用于监听指定的端口。当收到数据后，解析数据，最后通过反射的方式执行指定的方法。<br>　　在refer方法中，我们则通过java动态代理的方式，返回接口的代理对象。当我们调用接口的方法时，会运行invoke方法。在invoke方法中建立Socket连接，并向上一步的ServerSocket发送数据，等待返回结果。<br>　　最后我们实现服务提供方运行类和服务调用方运行类，如下：<br><figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">ServerRun</span> </span>&#123;</span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">static</span> <span class="keyword">void</span> <span class="title">main</span><span class="params">(String []args)</span> <span class="keyword">throws</span> Exception </span>&#123;</span><br><span class="line">        HelloService service = <span class="keyword">new</span> HelloServiceImpl();</span><br><span class="line">        <span class="comment">//传入接口的实现</span></span><br><span class="line">        RpcFramework.export(service, <span class="number">1234</span>);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">ClientRun</span> </span>&#123;</span><br><span class="line">    <span class="function"><span class="keyword">public</span> <span class="keyword">static</span> <span class="keyword">void</span> <span class="title">main</span><span class="params">(String[] args)</span> <span class="keyword">throws</span> Exception </span>&#123;</span><br><span class="line">        <span class="comment">//实际上获取的是接口的代理对象</span></span><br><span class="line">        HelloService service = RpcFramework.refer(HelloService.class, <span class="string">"127.0.0.1"</span>, <span class="number">1234</span>);</span><br><span class="line">        <span class="keyword">for</span> (<span class="keyword">int</span> i = <span class="number">0</span>; i &lt; Integer.MAX_VALUE; i ++) &#123;</span><br><span class="line">            <span class="comment">//通过代理的invoke方法，连接远程服务器，实现远程调用</span></span><br><span class="line">            String hello = service.hello(<span class="string">"World"</span> + i);</span><br><span class="line">            System.out.println(hello);</span><br><span class="line">            Thread.sleep(<span class="number">1000</span>);</span><br><span class="line">        &#125;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure></p>
<p>　　运行以上代码，则可看到效果。这样我们就完成了一个简单的rpc调用。代码下载地址：<a href="/code/rpc-demo.zip">rpc-demo.zip</a></p>
<h2 id="u5206_u6790"><a href="#u5206_u6790" class="headerlink" title="分析"></a>分析</h2><p>　　接下来我们开始分析以上代码，首先罗列出其问题：<br>　　1. 每新增一个服务，就需要调用一次RpcFramework.export方法，每次的端口都必须不同，能否多个服务共享一个端口。<br>　　2. 采用BIO的模式，存在阻塞等性能问题<br>　　3. 服务调用方能否动态的获取服务提供方的地址<br>　　4. 未考虑粘包掉包的问题<br>　　5. 缺少服务提供方和调用方的数据交换协议</p>

      
    </div>
    <footer class="article-footer">
      <a data-url="http://yoursite.com/2015/12/01/rpc/1.RPC系列之入门/" data-id="cijzzpv5j003k1cfsjoanol4g" class="article-share-link">Share</a>
      
      
  <ul class="article-tag-list"><li class="article-tag-list-item"><a class="article-tag-list-link" href="/tags/java/">java</a></li><li class="article-tag-list-item"><a class="article-tag-list-link" href="/tags/rpc/">rpc</a></li></ul>

    </footer>
  </div>
  
    
<nav id="article-nav">
  
    <a href="/2015/12/01/groovy/1.groovy入门/" id="article-nav-newer" class="article-nav-link-wrap">
      <strong class="article-nav-caption">Newer</strong>
      <div class="article-nav-title">
        
          Linux系列一之常用命令
        
      </div>
    </a>
  
  
    <a href="/2015/11/29/java/14.SPI概述/" id="article-nav-older" class="article-nav-link-wrap">
      <strong class="article-nav-caption">Older</strong>
      <div class="article-nav-title">Java SPI机制</div>
    </a>
  
</nav>

  
</article>

</section>
        
          <aside id="sidebar">
  
    
  <div class="widget-wrap">
    <h3 class="widget-title">Categories</h3>
    <div class="widget">
      <ul class="category-list"><li class="category-list-item"><a class="category-list-link" href="/categories/cache/">cache</a><span class="category-list-count">3</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/database/">database</a><span class="category-list-count">13</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/docker/">docker</a><span class="category-list-count">6</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/gis/">gis</a><span class="category-list-count">4</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/git/">git</a><span class="category-list-count">2</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/go/">go</a><span class="category-list-count">1</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/gradle/">gradle</a><span class="category-list-count">1</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/groovy/">groovy</a><span class="category-list-count">1</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/hadoop/">hadoop</a><span class="category-list-count">1</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/java/">java</a><span class="category-list-count">18</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/linux/">linux</a><span class="category-list-count">4</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/log/">log</a><span class="category-list-count">11</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/mongodb/">mongodb</a><span class="category-list-count">14</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/mq/">mq</a><span class="category-list-count">6</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/mybatis/">mybatis</a><span class="category-list-count">9</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/netty/">netty</a><span class="category-list-count">1</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/nginx/">nginx</a><span class="category-list-count">3</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/nio/">nio</a><span class="category-list-count">19</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/nodejs/">nodejs</a><span class="category-list-count">1</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/redis/">redis</a><span class="category-list-count">6</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/rpc/">rpc</a><span class="category-list-count">14</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/spring/">spring</a><span class="category-list-count">5</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/tomcat/">tomcat</a><span class="category-list-count">2</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/zookeeper/">zookeeper</a><span class="category-list-count">2</span></li><li class="category-list-item"><a class="category-list-link" href="/categories/杂项/">杂项</a><span class="category-list-count">2</span></li></ul>
    </div>
  </div>

  
    
  <div class="widget-wrap">
    <h3 class="widget-title">Tags</h3>
    <div class="widget">
      <ul class="tag-list"><li class="tag-list-item"><a class="tag-list-link" href="/tags/aop/">aop</a><span class="tag-list-count">8</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/aspectj/">aspectj</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/cache/">cache</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/classloader/">classloader</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/common-loggings/">common-loggings</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/commonjs/">commonjs</a><span class="tag-list-count">4</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/database/">database</a><span class="tag-list-count">10</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/docker/">docker</a><span class="tag-list-count">6</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/dubbo/">dubbo</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/fastdfs/">fastdfs</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/gclib/">gclib</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/geohash/">geohash</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/gis/">gis</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/git/">git</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/go/">go</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/gradle/">gradle</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/groovy/">groovy</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/hadoop/">hadoop</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/hessisan/">hessisan</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/java/">java</a><span class="tag-list-count">48</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/javassist/">javassist</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/kafka/">kafka</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/linux/">linux</a><span class="tag-list-count">4</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/log/">log</a><span class="tag-list-count">11</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/log4j/">log4j</a><span class="tag-list-count">4</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/logback/">logback</a><span class="tag-list-count">5</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/map/">map</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/memecached/">memecached</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/mina/">mina</a><span class="tag-list-count">5</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/mongodb/">mongodb</a><span class="tag-list-count">14</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/mq/">mq</a><span class="tag-list-count">6</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/mqtt/">mqtt</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/mybatis/">mybatis</a><span class="tag-list-count">9</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/netty/">netty</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/nginx/">nginx</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/nio/">nio</a><span class="tag-list-count">5</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/nodejs/">nodejs</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/postgresql/">postgresql</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/protobuf/">protobuf</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/proxy/">proxy</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/push/">push</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/rabbitmq/">rabbitmq</a><span class="tag-list-count">3</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/redis/">redis</a><span class="tag-list-count">6</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/rpc/">rpc</a><span class="tag-list-count">14</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/sitemesh/">sitemesh</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/sld/">sld</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/slf4j/">slf4j</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/socket/">socket</a><span class="tag-list-count">7</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/spatialite-for-android/">spatialite for android</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/spi/">spi</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/spring/">spring</a><span class="tag-list-count">13</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/tomcat/">tomcat</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/transaction/">transaction</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/web/">web</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/xSocket/">xSocket</a><span class="tag-list-count">7</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/zbus/">zbus</a><span class="tag-list-count">1</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/zookeeper/">zookeeper</a><span class="tag-list-count">2</span></li><li class="tag-list-item"><a class="tag-list-link" href="/tags/数据结构/">数据结构</a><span class="tag-list-count">2</span></li></ul>
    </div>
  </div>

  
    
  <div class="widget-wrap">
    <h3 class="widget-title">Tag Cloud</h3>
    <div class="widget tagcloud">
      <a href="/tags/aop/" style="font-size: 15.38px;">aop</a> <a href="/tags/aspectj/" style="font-size: 11.54px;">aspectj</a> <a href="/tags/cache/" style="font-size: 11.54px;">cache</a> <a href="/tags/classloader/" style="font-size: 10px;">classloader</a> <a href="/tags/common-loggings/" style="font-size: 10px;">common-loggings</a> <a href="/tags/commonjs/" style="font-size: 12.31px;">commonjs</a> <a href="/tags/database/" style="font-size: 16.92px;">database</a> <a href="/tags/docker/" style="font-size: 13.85px;">docker</a> <a href="/tags/dubbo/" style="font-size: 10px;">dubbo</a> <a href="/tags/fastdfs/" style="font-size: 10px;">fastdfs</a> <a href="/tags/gclib/" style="font-size: 10.77px;">gclib</a> <a href="/tags/geohash/" style="font-size: 10px;">geohash</a> <a href="/tags/gis/" style="font-size: 10px;">gis</a> <a href="/tags/git/" style="font-size: 10.77px;">git</a> <a href="/tags/go/" style="font-size: 10px;">go</a> <a href="/tags/gradle/" style="font-size: 10px;">gradle</a> <a href="/tags/groovy/" style="font-size: 10px;">groovy</a> <a href="/tags/hadoop/" style="font-size: 10px;">hadoop</a> <a href="/tags/hessisan/" style="font-size: 11.54px;">hessisan</a> <a href="/tags/java/" style="font-size: 20px;">java</a> <a href="/tags/javassist/" style="font-size: 10px;">javassist</a> <a href="/tags/kafka/" style="font-size: 11.54px;">kafka</a> <a href="/tags/linux/" style="font-size: 12.31px;">linux</a> <a href="/tags/log/" style="font-size: 17.69px;">log</a> <a href="/tags/log4j/" style="font-size: 12.31px;">log4j</a> <a href="/tags/logback/" style="font-size: 13.08px;">logback</a> <a href="/tags/map/" style="font-size: 10px;">map</a> <a href="/tags/memecached/" style="font-size: 10.77px;">memecached</a> <a href="/tags/mina/" style="font-size: 13.08px;">mina</a> <a href="/tags/mongodb/" style="font-size: 19.23px;">mongodb</a> <a href="/tags/mq/" style="font-size: 13.85px;">mq</a> <a href="/tags/mqtt/" style="font-size: 10.77px;">mqtt</a> <a href="/tags/mybatis/" style="font-size: 16.15px;">mybatis</a> <a href="/tags/netty/" style="font-size: 10px;">netty</a> <a href="/tags/nginx/" style="font-size: 11.54px;">nginx</a> <a href="/tags/nio/" style="font-size: 13.08px;">nio</a> <a href="/tags/nodejs/" style="font-size: 10px;">nodejs</a> <a href="/tags/postgresql/" style="font-size: 10.77px;">postgresql</a> <a href="/tags/protobuf/" style="font-size: 10px;">protobuf</a> <a href="/tags/proxy/" style="font-size: 10px;">proxy</a> <a href="/tags/push/" style="font-size: 10px;">push</a> <a href="/tags/rabbitmq/" style="font-size: 11.54px;">rabbitmq</a> <a href="/tags/redis/" style="font-size: 13.85px;">redis</a> <a href="/tags/rpc/" style="font-size: 19.23px;">rpc</a> <a href="/tags/sitemesh/" style="font-size: 10px;">sitemesh</a> <a href="/tags/sld/" style="font-size: 10px;">sld</a> <a href="/tags/slf4j/" style="font-size: 10px;">slf4j</a> <a href="/tags/socket/" style="font-size: 14.62px;">socket</a> <a href="/tags/spatialite-for-android/" style="font-size: 10px;">spatialite for android</a> <a href="/tags/spi/" style="font-size: 10px;">spi</a> <a href="/tags/spring/" style="font-size: 18.46px;">spring</a> <a href="/tags/tomcat/" style="font-size: 10.77px;">tomcat</a> <a href="/tags/transaction/" style="font-size: 10px;">transaction</a> <a href="/tags/web/" style="font-size: 10px;">web</a> <a href="/tags/xSocket/" style="font-size: 14.62px;">xSocket</a> <a href="/tags/zbus/" style="font-size: 10px;">zbus</a> <a href="/tags/zookeeper/" style="font-size: 10.77px;">zookeeper</a> <a href="/tags/数据结构/" style="font-size: 10.77px;">数据结构</a>
    </div>
  </div>

  
    
  <div class="widget-wrap">
    <h3 class="widget-title">Archives</h3>
    <div class="widget">
      <ul class="archive-list"><li class="archive-list-item"><a class="archive-list-link" href="/archives/2016/01/">January 2016</a><span class="archive-list-count">67</span></li><li class="archive-list-item"><a class="archive-list-link" href="/archives/2015/12/">December 2015</a><span class="archive-list-count">81</span></li><li class="archive-list-item"><a class="archive-list-link" href="/archives/2015/11/">November 2015</a><span class="archive-list-count">2</span></li></ul>
    </div>
  </div>

  
    
  <div class="widget-wrap">
    <h3 class="widget-title">Recents</h3>
    <div class="widget">
      <ul>
        
          <li>
            <a href="/2016/01/30/资料/">(no title)</a>
          </li>
        
          <li>
            <a href="/2016/01/30/java/13.Classloader系列一/">ClassLoader系列一</a>
          </li>
        
          <li>
            <a href="/2016/01/29/hadoop/1.hadoop系列之源码编译/">hadoop系列一之源码编译</a>
          </li>
        
          <li>
            <a href="/2016/01/29/go/1.GO系列之入门/">Go系列一之入门</a>
          </li>
        
          <li>
            <a href="/2016/01/28/tomcat/2.tomcat性能优化/">tomcat性能优化</a>
          </li>
        
      </ul>
    </div>
  </div>

  
</aside>
        
      </div>
      <footer id="footer">
  
  <div class="outer">
    <div id="footer-info" class="inner">
      &copy; 2016 John Doe<br>
      Powered by <a href="http://hexo.io/" target="_blank">Hexo</a>
    </div>
  </div>
</footer>
    </div>
    <nav id="mobile-nav">
  
    <a href="/" class="mobile-nav-link">Home</a>
  
    <a href="/archives" class="mobile-nav-link">Archives</a>
  
</nav>
    


<script src="http://libs.baidu.com/jquery/2.0.3/jquery.min.js"></script>


  <link rel="stylesheet" href="/fancybox/jquery.fancybox.css" type="text/css">
  <script src="/fancybox/jquery.fancybox.pack.js" type="text/javascript"></script>


<script src="/js/script.js" type="text/javascript"></script>

  </div>
</body>
</html>